Swage-shaper for saws.



" WATTORNEY No. 834,Q09. PATENTBD 0017.23, 19Q6. v. H. & A. K. HANCHETT.

SWAGE SHAPER FOR SAWS.

AIPLIOATION nun SEPT. e. 1904.

2 SHEETS-SHEBT l.

WITNESSES:

rut NORRIS ":rnls 00., wumuararr, I; L

. STATES .voLNEY s. HANOHETT'AND. ARTHUR K. 'HANCHETT, OF I ,MICHIGAN.

PATENT: OFFICEQ BIG RAPIDS,

SWAGE-SHAPER FOR sAws.

Specification of Letters Patent.

Patented. Oct. 23, 1906.

Application filed September 6, 1904:. Serial No. 223,499.

To all whom; it may concern/.- Be it known that we, VOLNEY HIRAM HAN-OHETT, and ARTHUR KENT- HANOHETT, -cit1- "zens of the- United States,residing at Big 5 Rapids, in the county of Mecosta and State ofMichigan, have invented certain new and useful Improvements inSwage-Shapers for "Saws and- We do hereby declare the following "a:to'beja full, clear, and exact description of the'invention, suchas-will enable others skilled in the art to which it appertains tomakeand use the same.

" This'invention is a machine for shaping the points of saw-teeth thathave been previouslyswaged or flattened; and it operates by exertingside pressure upon the teeth to press the teeth to the desired shape,Widest "at theextreme point and face of the teeth,

" thus producing a tooth shape well adaptedto give a smooth evencut' andto afi'ordthe necessary clearance for thesaw-blade without cutting awaythe timber unnecessarily.

1'! Our invention further embodies means for accurately gaging the width,of the teeth and i5-for insuring that all the teeth shall have thesame'shape and size.

With these and I 40 erate .thernJ Fig. 6 is aside view, part brokenaway, showing the operating-lever.

Fig. 7 is a perspective view of one of the dies. As is clearly shown inthe drawings, the device consists in ahead 1, preferably madev fromaso'lid iece of steel and formed with a transverse s 0t or recess 1 toreceive the saw-teeth. The head is bored longitudinally, and in the boreis fitted a pair of plugs 2, one on each side of the slot 1. preferablymade of high-grade steel. The

plugs are internall threaded, preferably eccentrically thereo to receivethe screw 3, one end 3* of which has a right-hand thread and the otherend 3 of which has a left-hand certain other objects, which will appearlater inthis specification, 1 1;} 1 in view 'ourinvention consists incertain cono structions andcombinations of parts and the These plugsarethread, whereby the lugs 2 are advanced toward or separated rom eachother. The screw 3 is operated by a suitable handle 4.

In the inner face of each plug 2 is set a die 5,

preferably made of hardened toolsteel. To

receive the dies 5,-the inner faces of the plugs 2 are recessed, as at 5in Fi 5, the bottom of the recess forming a shou der to take the thrustof the die 5. Extending from thebottom of the recess 5 through to theouter face of the lug 2 is a hole 5 A punch or other suitab e tooldriven into the opening 5 quickly removes the die from the plug. Thisremoval of the dies 5 is sometimes necessary in order to permit ofregrinding the working faces of the dies.

.To keep the die from turning, aprojectionor key 5 is formed on itscircumference and fits a keyway'2 formedin the plug 2.

The working faces 5 of the dies are accurately ground and beveled inconverging planes, so as to taper the saw-teeth backward from the pointand from the face of the tooth, as shown in Fig. 5.

To hold the dies in proper alinement relatively to the slot 1?, a groove6is formed in one end of the screw 3, and a locking-plate? secured tothe side of the head 1, engages the groove to prevent longitudinalmovement of the screw. The dies 5 may be brought more or less closelytogether, depending upon the are through which the handle 4 is revolved.The position of this working arc. may be adjusted to suit theconvenience of the operator by means of the handle 4, which may beclamped at any desired position along the uadrant or slotted arm 8 bymeans of a nut 8 The handle 4 is made to revolve upon the screwS; butthe quadrant 8 is rigidly secured to the screw. I The handle is mountedoutside the quad rant, permitting the use of a short screw andpreventing the handle from wearing .on the threads of the screw, aswould be the case were it'mounted inside the slotted arm.

By the means just described it is seen that movement of the handlethrough a suitable arc will advance the die-faces 5 toward each otherand moving the handle in the opposite direction will separate them. Intheir forward movement they engage and accurately press to shape theteeth 9 of the 'saw.

To insure accuracy in the location of the side bevel of the teethrelatively to their of saving the saw-blade, for

cutting edge and to secure uniformity in the width of the teeth, we havedevised a catch or gage upon which the point of the tooth rests whilebeing pressed and have combined in the catch means for adjusting itsposition so the width of the teeth may be varied to suit the workingrequirements of the saw. The catch consists in a hooked finger 10,carried by a bracket 10 on the head 1. The point of the saw-tooth 9rests in a corner or angle 10 of the finger 10, which is properly alinedto the die-face 5 To increase or decrease the width of the saw-teeth, itis only necessary to shift the hooked finger 10 by means of the set-nuts10, thereby bringing the saw-teeth 9 farther into or out from thecenter'of the beveled die-face, as shown in Fig. 5. Thus by properlysetting the finger 10 any required width of teeth can be produced.

When the shaper is used on circular saws, as shown in Fig. 1, we preferto attach the shaper to a standard S, the lower end of which is fittedto a pin P, carried by the guide G, mounted on the saw-arbor A, thearrangement being the same as on a circular-saw swage. When theswage-shaper is to be used, the saw-swage is removed from the pin andthe swage-shaper is placed thereon, as shown in Fig. 1. 4

By the means above described we have produced a swage-shaper thatcompletes the work of the saw-swage and presses each tooth to a perfectshape, widest at the extreme point, widest on the face, thus making aproper clearance for the saw-blade.

This machine makes all the teeth alike, and hence each tooth does itsproper amount of work, producing a saw that is easy running and turningout smoother and better lumber and requiring less power than when theteeth are not even.

This device possesses a further advantage it presses the steel of theteeth instead of filing it away, as by a side file.

What We claim as our invention, and desire to secure by Letters Patent,is as follows:

1. The combination of a slotted head; a

screw having right and left hand threads;

means for preventing longitudinal movement of the screw; a pair of plugsmounted in said head and simultaneously actuated by said screw; a pairof opposing dies having beveled faces, and removably mounted in saidplugs;

''-a hooked finger carried by said head and extending into its slotopposite the die-faces, substantially as described.

2. The combination with a head having a transverse slot; of opposingplugs slidably mounted in said head and having longitudinaloppositely-threaded openings; a screw having oppositely-threaded endsrespectively engaging the walls of said openings to actuate said plugssimultaneously; oppositelyplaced dies secured to the opposing faces ofsaid plugs eccentric to said openings.

3. A swage-shaper comprising a hollow head having atransversely-extending slot located intermediate the ends of the head, aplug slidingly and non-rotatably received in the head on opposite sidesof the slot, the plugs provided with alined and oppositelythreadedapertures, a single oppositelythreaded screw received in the aperturesand extending across the slot, means for preventing endwise movement ofthe screw, means for rotating the screw, and a die seated in each plug,the dies located in alinement with and opposite to each other.

4. The combination with a head having a transverse slot; of opposingplugs slidably mounted in said head and having longitudinaloppositely-threaded openings; the inner face of each plug having arecess eccentric to said screw-opening and having a hole extending fromthe bottom of the recess to the outer face of the plug; a screw havingoppositely-threaded ends respectively engaging said threaded openings toactuate said plugs simultaneously; oppositelyplaced dies secured to theopposing faces of said plugs eccentric to said openings.

5. A swage-shaper for saws comprising a slotted stationary head, diessupported in the head, means for moving the dies toward and from eachother relative to the head, a gage carried by the head, said gagecomprising an approximately L-shaped. member, one arm of which extendsinto the slot in the head, and a hook formed on the arm within the slotand adapted to receive the saw-tooth.

In testimony whereof we aflix our signature in presence of twowitnesses.

V OLNEY H. HANCHETT. ARTHUR K. HANCHETT.

Witnesses:

O. W. BARTON,

GEORGE M. DAVIDSON.

